Sökning: "Site-specific modification"
Visar resultat 1 - 5 av 18 avhandlingar innehållade orden Site-specific modification.
1. Catalysis and Site-Specific Modification of Glutathione Transferases Enabled by Rational Design
Sammanfattning : This thesis describes the rational design of a novel enzyme, a thiolester hydrolase, derived from human glutathione transferase (GST) A1-1 by the introduction of a single histidine residue. The first section of the thesis describes the design and the determination of the reaction mechanism. LÄS MER
2. Development of a covalent site-specific antibody labeling strategy by the use of photoactivable Z domains
Sammanfattning : The joining of two molecular functions or the strategy of adding functions to proteins has been tremendously important for the development of proteins as tools in research and clinic. Depending on the intended application, there are a wide variety of functions that can be added to a proteins. LÄS MER
3. Ribosomal RNA Modification Enzymes : Structural and functional studies of two methyltransferases for 23S rRNA modification in Escherichia coli
Sammanfattning : Escherichia coli ribosomal RNA (rRNA) is post-transcriptionally modified by site-specific enzymes. The role of most modifications is not known and little is known about how these enzymes recognize their target substrates. LÄS MER
4. Structure-Function Relationships of Pi Class Glutathione Transferase Studied by Protein Engineering
Sammanfattning : The glutathione transferases (GSTs) represent a superfamily of dimeric proteins involved in cellular detoxication by catalyzing the nucleophilic addition of the reduced glutathione (GSH) to the hydrophobic electrophiles. The present work focuses on the functional role of the conserved structures of GSTP1-1. LÄS MER
5. A Novel Route for Construction of Multipurpose Receptors through Chemical Modification of Glutathione Transferases
Sammanfattning : This thesis describes how the human Alpha class glutathione transferase (GST) A1-1 can be reprogrammed either to function as a multipurpose biosensor for detection of small molecule analytes, or as a handle providing for more efficient protein purification.A novel, user-friendly, and efficient method for site-specific introduction of functional groups into the active site of hGST A1-1 is the platform for these achievements. LÄS MER